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Potential created by a test particle in one-, two- and three-dimensions in a flowing ion-electron plasma

Published online by Cambridge University Press:  13 March 2009

P. Chenevier ,
J. M. Dolique  and
H. Perès
P. Chenevier
Affiliation:
Laboratoire do Physique des Plasmas, Equipe do Recherche Associée au C.N.R.S. Université Scientifique et Médicale, 38 Grenoble, France
J. M. Dolique
Affiliation:
Laboratoire do Physique des Plasmas, Equipe do Recherche Associée au C.N.R.S. Université Scientifique et Médicale, 38 Grenoble, France
H. Perès
Affiliation:
Laboratoire do Physique des Plasmas, Equipe do Recherche Associée au C.N.R.S. Université Scientifique et Médicale, 38 Grenoble, France
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Abstract

In a plasma at rest, the electrostatic potential around a point charge obeys the well-known Debye shielding law. Modifications, for the ease of a flowing plasma, have been studied in the limiting cases of either long or short distances for subsonic and hypersonic velocities. Only recently this was extended to include all distances, restricted to a two-dimensional case. However, neither of these modifications includes the ionic motions. In this paper, we derive general expressions for the electrostatic potential which are valid for all distances and flow velocities in one-, two- and three-dimensional cases. This is done first with unperturbed ions, and then for the case where ionic motions, which are seen to be important for mesothermic flow velocities, are included. In both cases, the results are discussed and illustrated.

Type
Research Article
Information
Journal of Plasma Physics , Volume 10 , Issue 1 , August 1973 , pp. 185 - 195
Copyright
Copyright © Cambridge University Press 1973

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References

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